Add a probability to Alternate-Protocol support.

net/http/http_stream_factory_impl_job.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/http/http_stream_factory_impl_job.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 153 matching lines @@
     case STATE_INIT_CONNECTION_COMPLETE:
     case STATE_CREATE_STREAM_COMPLETE:
       return using_quic_ ? LOAD_STATE_CONNECTING : connection_->GetLoadState();
     default:
       return LOAD_STATE_IDLE;
   }
 }
 
 void HttpStreamFactoryImpl::Job::MarkAsAlternate(
     const GURL& original_url,
-    PortAlternateProtocolPair alternate) {
+    AlternateProtocolInfo alternate) {
   DCHECK(!original_url_.get());
   original_url_.reset(new GURL(original_url));
   if (alternate.protocol == QUIC) {
     DCHECK(session_->params().enable_quic);
     using_quic_ = true;
   }
 }
 
 void HttpStreamFactoryImpl::Job::WaitFor(Job* job) {
   DCHECK_EQ(STATE_NONE, next_state_);
@@ skipping 1288 matching lines @@
 
   if (job_status_ == STATUS_SUCCEEDED && other_job_status_ == STATUS_BROKEN) {
     HistogramBrokenAlternateProtocolLocation(
         BROKEN_ALTERNATE_PROTOCOL_LOCATION_HTTP_STREAM_FACTORY_IMPL_JOB_MAIN);
     session_->http_server_properties()->SetBrokenAlternateProtocol(
         HostPortPair::FromURL(request_info_.url));
   }
 }
 
 }  // namespace net